Mark Clifton-Gaultier wrote: ↑
Sat Jun 22, 2019 8:29 am
Minimum? I've never heard of the possibility of more than one - what advantage do multiple sims offer?
Two sims are handy if you travel. One for your main provider and a second for the place you are traveling in. I use it to have an Spanish and a German number at the same time. A downside is that if the reception is poor, it seems to kill the battery quicker as it is constantly seeking two useable signals. I would guess that about 10-15% of phones for sale in the places I visit have two sims - its not something that you might even notice unless you are looking for it.
Phones with 4 sims are used primarily in Africa, as far as I know. The reason is the phone works as a payment system. You can pass phone credit to someone else (like parents topping up the credit on a child's pay-as-you-go phone). This mechanism is used by street vendors to accept payment for goods. They can later withdraw the cash from a cash machine or pay for something else. As there are many phone companies the street sellers want to accept payment from as many people as possible so one sim for each phone company. With two 4-sim phones you can accept payment from up to 8 phone companies. The European (and no doubt north American) banks have done everything in their power to try and prevent this kind of "informal" payment system and they don't want the phone companies edging into their "territory". As the 4 sim phones are really "payment systems" I doubt if any of the other features are of particular interest.
I have head some people describe simple mobile phones with no "smart" features (especially the small flip over models) as "pimp" phones or "drug dealer" phones.
Phones with no gps facility are a little harder to track as you have to depend on localizing it via triangulation with the cell-towers. Not really difficult but not as accurate or convenient as the other alternative. If it is "smart" and it has a gps, all you need to do it get one of the apps to keep blabbing its current gps location. Lots of people have these features enabled voluntarily so their Facebook/whatsapp/google friends can see where they are all the time. No hacking required. Many apps do it anyway without asking you. When you click on the license agreement when turn on the phone the first time, you give the manufacturer explicit permission to do so at least in the Samsung licenses I read, before I send the phone back. The conditions vary by country - you can see them by changing the settings during phone set-up.